External risk intelligence

Apache Syncope Cypher Injection in Persistence Layer.

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-86460

Apache Syncope is an identity and access management platform frequently deployed as a public-facing service to manage user identities, authentication, and provisioning, making its administrative and end-user interfaces commonly accessible via the internet.

SQL Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability in the Apache Syncope identity and access management platform could allow unauthorized access to and manipulation of data. This issue stems from how certain search conditions are processed, potentially enabling malicious actors to inject commands into the system's database layer. The primary concern is to confirm if your Syncope instances are affected and the extent of potential exposure.

Data injection flaw in identity management software.
Affects systems that manage user access and identities.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by crafting a malicious FIQL search condition that targets the Neo4j persistence layer. This could allow them to manipulate database queries, potentially leading to unauthorized access to sensitive information or the ability to alter data.

No authentication required to reach the component.
Malicious search conditions trigger the flaw.
Attacker can access or modify data.

Live Threat

Current exploitation, exposure, and threat context

A Cypher injection vulnerability in the Neo4j persistence layer could allow an attacker to manipulate database queries when specific FIQL search conditions are processed. This could potentially lead to unauthorized access or modification of data stored within the Neo4j database that Apache Syncope interacts with.

System data may be exposed.
Malicious queries could be injected.
Unintended data access or modification.

Operational Fix

Recommended remediation, mitigation, and detection steps

This Cypher injection vulnerability in Apache Syncope's persistence layer impacts identity and access management, suggesting potential ownership by platform or application teams responsible for its operation. The first step should be to identify all instances of the affected Apache Syncope versions, assess their reachability and business criticality, and locate the accountable owners for each deployment before planning remediation.

Platform and application owners.
Verify affected Syncope instances and exposure.
Plan upgrade or vendor coordination.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is Apache Syncope and how is it used?

Apache Syncope is an open-source identity and access management platform. Organizations use it to centralize user management, handle authentication, and automate how users are provisioned across various IT systems. It acts as a central hub for controlling digital identities within an enterprise.

What does CVE-2026-86460 mean by Cypher injection?

This vulnerability is a type of injection flaw (CWE-89). It occurs when the software incorrectly handles specific search conditions, allowing an attacker to inject unauthorized commands into the database query language. In this case, it targets the Neo4j graph database, potentially letting someone manipulate or bypass intended data access rules.

How can an attacker trigger this vulnerability?

The flaw is triggered by sending specially crafted FIQL search conditions to the persistence layer. The vulnerability does not require a user to be authenticated to submit these requests. Simply performing a standard search action on the software will not trigger the bug; it requires specific, malicious input designed to alter the underlying database query.

Is my Apache Syncope instance at risk?

Halo Surface Signal indicates that Apache Syncope is often deployed as a public-facing service, which increases the likelihood of external accessibility. If your instance is reachable over the internet to support user authentication or identity workflows, it is a primary candidate for review regardless of whether it is an administrative or end-user interface.

What steps should I take to address this issue?

Start by identifying all deployed instances of Apache Syncope and checking their version numbers against the affected ranges. Once you locate the affected systems, prioritize them based on their business criticality and network access. Coordinate with the teams responsible for these applications to plan and apply the necessary version upgrades provided by the vendor.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.